Q.19 In which form does the Earth re-
radiates the insolation at night?
A.UVrays
B. Short waves
C. Long waves
D. Invisible x-rays
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The insolation received by the earth is in short waves forms and heats up its surface. The earth after being heated itself becomes a radiating body and it radiates energy to the atmosphere in long wave form. This energy heats up the atmosphere from below. This process is known as terrestrial radiation
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